613367440 has 80 divisors (see below), whose sum is σ = 1640966400. Its totient is φ = 208857600.

The previous prime is 613367431. The next prime is 613367477. The reversal of 613367440 is 44763316.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 613367396 and 613367405.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79765 + ... + 87115.

It is an arithmetic number, because the mean of its divisors is an integer number (20512080).

Almost surely, 2^613367440 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 613367440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (820483200).

613367440 is an abundant number, since it is smaller than the sum of its proper divisors (1027598960).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

613367440 is a wasteful number, since it uses less digits than its factorization.

613367440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7520 (or 7514 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 34.

The square root of 613367440 is about 24766.2560755557. The cubic root of 613367440 is about 849.6503475376.

The spelling of 613367440 in words is "six hundred thirteen million, three hundred sixty-seven thousand, four hundred forty".